Ford F-150 (2004-2008) :: Trailer Lights Inoperative - No Power Back To 7 Pin Connector
Jan 7, 2012
My trailers lights aren't working at all- so frustrated right now!! I've checked all the fuses and those are good, I've got no power back to the 7 pin connector...
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Last night I was heading home from a two day race and found that my turn signals wasn't working. the running lights are working and obviously i could feel the brakes working.
well i hooked up some jumpers to a 12v battery and the 7 pin and the lights work. to make 100% sure it works i hooked it up to my neighbors Tacoma. it all worked. well..........
On my last f150 when it was new this happened to me too. it ended up being the turn signal fuse on my truck.
I hooked right back to my truck again and just made sure my plug was all the way in and still nothing so i know its my truck side.
Now my last f150 owners manual had a section to where it told you what fuse is what and where. well i don't even see the f250 fuse box is and don't know which one it is to see if its blown.
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03 f350 7.3L. Have no power for the trailer running lights at the connector end. No power when the end is split and no power at the next connector above the spare tire. I have power at the fuse (38) and the fuse is good. What is the best connection to check next? Is there a common culprit that might cause this problem somewhere? I know 3 more connectors are in the frame by the fuel tank but pretty much lose track of which one might have the wire for the trailer.
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For our new pontoon with surge brakes I need to add reverse lights to the wiring harness to deactivate the surge brakes while backing up. What is the proper way of doing this? BTW this is on an 06 F150 XLT with factory 7 pin harness.
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I have both a hydraulic dump trailer with two 12v batteries and an RV trailer with two 6v batteries to supply 12v. Both trailer's batteries are wired to be charged from the tow vehicle if the TV is equipped with a charge line.
Does the OEM 7 pin connector on a 2005 Ford 6.0 F250 CC 4X4 have a charging line on it? If so which terminal / pin is it?
What gauge of wire is it and how much amperage will it deliver to the connector? For testing, when is it hot? When the truck is running only? When the key is on? Is it hot all of the time?
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I have a 2004 f150 fx4. My running lights on my trailer will not come on. Brake lights work, turn signals work, back up lights work. Had my boat mechanic check the trailer and that showed that the lights work fine. So I started checking fuses on the truck. Fuses all looked good. Then I went into the Auxiliary Relay Box in the engine compartment on the left fender. In the spot marked Trailer Tow Park Lamps (R201), theres no relay. R202 is for the Fog lamps, same relay. I pulled the Fog Lamp relay out and went to put in R201 for Trailer lamps, but there's no contacts in the R201 slots. The relay goes in with ease and just falls out. No contacts. Whats going on?
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My truck trailer connection has no power to the + pin, called the Trailer Tow Battery Charge. I traced back to the fuses and relays and discovered the relay missing. Unbelievably Ford is having a hard time with this relay. They don't seem to be sure which one it is. My owner's manual says it is a Full ISO relay. But Ford doesn't like that description.
What can I use there? Is there any after market relay available that would fit. Napa said they don't have anything listed, and O'Reilly and Autozone look at me with a stupid expression. I also need one for the starter relay. Mine was replaced with a anti theft device that has a remote control. I want that removed so I need the realy.
All the relays appear to be the same. I plugged in the blower motor relay in the trailer tow charge position and got power to the + pin. But I need the blower motor. The Ford guy said that it might be the right one, but he couldn't be certain and if I plug it in and it doesn't work it's my loss.
This is for the 2006 F-150, 4.6l truck.
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Well, it seems the cover on my trailer connector got broken off. The cover locks the trailer plug into the truck side. The connector on the truck is/was supplied by Ford. Now the dealer say NLA, only 2005 and up. Truck is 99 F250 SD. Plug is 4/7 way. Where can I locate a direct plug-in replacement? I do not want to be cutting and splicing.
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Hooked up to my trailer and I have running lights but no turn signals, brake lights, or trailer brakes. I pulled plugged in my other vehicle to the trailer and everything works fine. My truck is a 2011 with the factory trailer brake control and pigtail connection. It worked fine last year.
I checked the connector with a test light and there is only power to the running lights. I then disconnected the plug at the back of the trailer connector and tested there and got the same results. Are there particular fuses or relays I should look at?
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Just returned from an 8500 mile travel trailer trip with my 2012 F150 with EcoBoost. Couldn't be happier with how the truck performed. Did discover, however, that my 7-pin connector does NOT charge trailer battery while driving. Wasn't a problem this trip, but could be an issue when dry camping (no electrical hookup). Is it a big deal to get my connector to charge trailer battery while driving?
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I have a buddy with a 1999 F250 W/7.3 TD. His property is accessed through a couple miles of hard terrain, so this may wind up being a loose ground or something that pulled loose.Anyway, the truck just all the sudden won't accelerate. It'll crank & idle all day long, but when you hit the gas.....nothing happens. I realize the diesel doesn't have an accelerator cable, as it is drive by wire. First thought was the APP sensor(accelerator), but most of the dash indicator, O/D, etc. lights are inop too.
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In removing the COPs on my 2004 F150 Lariat 5.4L for a spark plug change, I noticed that the locking tab on one of the electrical connectors that plugs into the COP is broken. The previous owner had a zip tie on it to keep it on. Can I purchase a new connector and splice it on so that I don't have to use a zip tie? If so, what is the part number?
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I need to wire up a trailer lighting connector for my 2000 Buick Century but I can't find the wiring run for it. Where would I find them to be able to tap into them?
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Do all New trucks come with the factory clearance light plug-in-connector and if so, where would it be located? The reason I ask, is I'm considering adding the cab clearance lights to my 15 F350. Really would like the factory lights but I hear Recon makes some similar.
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Was moving a boat on a trailer with surge brakes and found I could not back it up. Found that I had no power on the center pin on the round 7 seven trailer connector.
When backing this type of trailer the back up light power opens a solenoid that keeps the brakes from working in reverse. Don't know how long its been like this because this is the first time I moved this trailer. The question is where is the fuse and or relay for this. The back up lights on the truck do work.
2007 F350 6.0 ....
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I changed out my plugs. The plug connector on the #3 coil no longer snaps on. My only option is to use a small ziptie to hold it in place. Can cut it off and wired a new plug end on..
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2006 f-150 lariat 4wd:
The power Tailgate window works but the sunroof doesn't and i noticed tonight that the button for the tailgate window is illuminated green signifying it has power but the sunroof button right next to it is not illuminated. I just bought the truck yesterday and knew that the sunroof didn't work. i figured i could fix it i just am not sure where to start yet.
It looks like the sunroof might have leaked before and so the previous owner sealed it with silicone from the roof of the truck. i removed the silicone and made the sunroof free to open and close but i still have the issue that there is no power to the sunroof. i was thinking maybe the motor burned out because it couldn't move and that someone had tried to open it while it was glued shut, but that still doesn't explain the light not coming on.
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Been having a on/off problem with my trailer lights. Some times the right hand side does not work, them it starts working. I thought it was my trailer until I rented a bobcat this weekend. They couldn't get the right side lights to work.
I stopped by my Ford dealer and a service tech came out and checked out my pigtail. All checked ok. It seems odd that both trailers would not work on the right side. Two different types of trailers. One is my RV, the other was a flat bed for hauling the bobcat.
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Borrowed a buddys trailer that had wiring issues. I ended up blowing a mini fues & maxi fuse in my truck. 06 F350 CC ... Replaced both fuses in the truck and had park lights on the truck but now dont get any lights on any trailers. All factory plugs 7pin & 4 pin. I get turn signals and brake lights on the trailers but that is all. If the fuses are good were should I start looking for problems? or is there more fuses I may be missing. I have metered all the fuses under the dash aswell as under hood all check out. Where to go next ???
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I recently purchased a 2006, 4x4, low mileage and when towing a trailer the truck develops vibration right at 52 mph. Dealer has not found the problem.
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Is there a fuse or something to check? All other lights work, just book the running lights
2006 f250 4x4 CC
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